Hmm....So Roy hit HPoH while he was casting harm, but the spell didn't fizzle....That'd be a successful Concentration check, wouldn't it?


Roy's using a +5 greatsword, damage of 2d6+5, minimum damage of 7....
First post has him with Strength 24, that's a +7 mod; wielding a two-handed weapon requires two hands, so times-and-a-half damage, or +10.5; rounded down that'd be +10....
So minimum 17 damage.

Assuming starmetal doesn't bypass silver DR, HPoH's DR reduces by the damage taken by 10, so that's 7.

The DC for a concentration check while casting a spell is 10+damageTaken+spellLevel, and harm is a level 6 spell, so 10+7+6, or 23....

If HPoH rolled a 20, that'd take a +3 modifier.

Undead use Charisma instead of Constitution for Concentration checks, and first post has HPoH with less than 14, so +1 is highest possible ability modifier.


So HPoH would have to have at least +2 worth of Concentration modifier from another source. Whether that's skill points, Skill Focus (concentration) or something external; I'm not sure.